Open Widgetsoid, Click on Notifications, Click on the Notification Toggle widget that you created, Click Modify. Once you're in the edit area for that Notification Toggle widget, click on the Advanced tab at the bottom of the page. Make sure the Notification Icon says "None". Once you've done that, you can update the profile for that widget (so that the settings are saved) and then click on "Apply." Your notification toggle will update automatically at the top.
Widgetsoid is by far my favorite Widget/Notification Toggle app. Highly customizable (and definitely worth it to support the developer, who pretty much does it all on his own...but still manages to respond as quickly as possible, despite not having a complete staff helping him).